USN-4561-1: Rack vulnerabilities

30 September 2020

Rack could be made to expose sensitive information over the network.

Releases

Packages

  • ruby-rack - modular Ruby webserver interface

Details

It was discovered that Rack incorrectly handled certain paths. An attacker
could possibly use this issue to obtain sensitive information.
(CVE-2020-8161)

It was discovered that Rack incorrectly validated cookies. An attacker
could possibly use this issue to forge a secure cookie. (CVE-2020-8184)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04

In general, a standard system update will make all the necessary changes.